package com.itheima.servlet;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/demo9")
public class ServletDemo9 extends HttpServlet {
    @Override

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
      //获取共享数据
        Object username = req.getAttribute("username");
        System.out.println(username);


    }
}
